1313605223213 has 2 divisors, whose sum is σ = 1313605223214. Its totient is φ = 1313605223212.

The previous prime is 1313605223131. The next prime is 1313605223239. The reversal of 1313605223213 is 3123225063131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1284171703369 + 29433519844 = 1133213^2 + 171562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313605223213 - 2²⁴ = 1313588445997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313605223213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313605223243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656802611606 + 656802611607.

It is an arithmetic number, because the mean of its divisors is an integer number (656802611607).

Almost surely, 2^{1313605223213} is an apocalyptic number.

It is an amenable number.

1313605223213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313605223213 is an equidigital number, since it uses as much as digits as its factorization.

1313605223213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 1313605223213 in words is "one trillion, three hundred thirteen billion, six hundred five million, two hundred twenty-three thousand, two hundred thirteen".